Jackson's slept on my bed since he was about 4 months old.
I let him one night, he slept thru the night, and the rest is history..... He's been there ever since and I wouldn't have it any other way.
I do have a baby gate still on my door that I close every night. Just because if not, he may hear a noise or see an animal outside and start barking and I don't wanna deal with it. Easier to know he's right in my room.